Two hours of Senate testimony, countless pages of written documents. Peel away the caution, the Fed-speak, and the dense economic language, and what can we now say about The (economic) world according to Janet Yellen?Plus, #AskJPM's attempt at social media community engagement on Twitter was shut down not long after it was launched. What are the pitfalls businesses should watch out for as they try to engage their communities? Finally, you’ve got a business that’s never earned a dollar and someone offers you $3 billion for it. And you say no. For Snapchat, started by two college students a couple years ago, was it not enough money?